I have been working in the US for 5 years and am thinking about moving to Switserland to take up employment there.I have read that the US-Swiss tax treaty allows me to transfer the 401K amount to Switzerland and will not be taxed in US. How will it be taxed in Switzerland? Thanks

You would be better off posting this in the Tax forum. There are international tax experts that should be able to answer your question.

https://www.askmehelpdesk.com/taxes/